Open AccessCHARACTERIZATION OF RECYCLED AGGREGATE FOR USE AS BASE COURSE MATERIAL
Author(s) -
Kongrat Nokkaew
Publication year - 2018
Publication title -
international journal of geomate
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.267
H-Index - 17
eISSN - 2186-2990
pISSN - 2186-2982
DOI - 10.21660/2018.48.pre39
Subject(s) - gradation , aggregate (composite) , rut , base course , asphalt , cracking , international roughness index , environmental science , wearing course , materials science , geotechnical engineering , waste management , composite material , surface finish , engineering , computer science , computer vision
This study extensively evaluated the soil water characteristic curve and resilient modulus characteristic of recycled pavement aggregate including recycled concrete aggregate (RCA), recycled asphalt pavement (RPM), and recycled pavement material (RPM) when used as a base course in road structure. The three recycled aggregates with similar gradation were selected for this study. The resilient modulus was determined for each material according to NCHRP 1-28A procedure. The soil-water characteristics curves (SWCC) were determined for each material. The major distresses including longitudinal cracking, alligator cracking, total rutting, and International roughness index (IRI) were predicted from the Mechanistic-Empirical Pavement Design Guide (M-EPDG). The result showed that among recycled aggregates, RPM provided the highest for all distresses while RCA had the lowest distresses. Using recycled pavement aggregates as base course provided lower distress than limestone which was used as a control conventional aggregate. This implied that recycled aggregate had high quality which can use as a base course in road construction.
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